Polyurethane Foam
PORON® 4701-50 (Firm)
Overview
PORON® 4701-50 is a firm, microcellular polyurethane foam engineered for high-energy impact management. It’s designed for gasketing and sealing applications where durability and excellent compression set resistance are critical. This material maintains its shock-absorbing and sealing performance even under fluctuating temperatures.
Features
- Firm and durable — ideal for high-impact, high-energy applications.
- Available thicknesses range from 0.012″ to 0.500″ (0.30 mm to 12.7 mm).
- Density options include 15, 20, and 30 lb/ft³ (240, 320, and 480 kg/m³).
- Compression force deflection at 25%: ~10, 17, or 39 psi depending on density (69, 117, or 207 kPa).
- Excellent compression set resistance (~10% max at 70 °C).
- Thermal performance: continuous use up to 90 °C (194 °F), intermittent up to 121 °C (250 °F); embrittles at –40 °C.
- Robust mechanical properties: tensile strength (100% elongation), Shore O hardness (~18–55), tear resistance, and stability.
Benefits
- Manages shock and vibration effectively with reliable energy absorption.
- Retains sealing integrity over repeated compression cycles and high-temperature use.
- Supports precise fabrication with consistent thickness and cell structure.
- Provides long-term durability under demanding conditions.
Applications
- High-impact gasketing in industrial and automotive settings.
- Shock-absorbing pads in mechanical assemblies.
- Cushioning and sealing where longevity and firmness are required.
Why Choose PORON® 4701-50?
- Firm yet resilient — well-suited for advanced impact and energy control needs.
- Maintains performance across wide temperature ranges.
- Demonstrates exceptional compression recovery and material integrity.
- Available in multiple densities and thicknesses for design flexibility.
- Trusted for long-term performance in demanding gasket and cushioning environments.
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